Article 1 — Description
Furnish, install, move, and remove portable traffic barrier .
Article 2 — Materials
2.1 Furnished by the Contractor .
2.1.1 Concrete. Furnish barrier of the class of concrete shown on the plans and using materials that meet the
pertinent requirements of the following Items . Item 420, “Concrete Substructures ” Item 421, “Hydraulic Cement Concrete” Item 424, “Precast Concrete Structural Members (Fabrication)” Item 440, “Reinforcement for Concrete” Item 442, “Metal for Structures”
2.1.2 Steel. Barrier sections will be furnished when shown on the plans.
2.1.3 Concrete and Steel . When barrier is to be furnished and retained by the Contractor, products from
non-approved sources or previously used product s may be provided if the Contractor submits written certification that the barrier sections and materials substantially conform to the requirements of this Item. The Engineer may approve the use of the product if : the barrier sections substantially meet typical cross -section dimension requirements, there is no evidence of structural damage such as major spalls or cracks, the general condition of both the barrier sections and their connectors is acceptable, the barrier is new, the barrier is being reused, and the applicable crash test criteria in accordance with Item 502, “Barricades, Signs, and Traffic Handling,” are met .
2.1.4 Connection Hardware . When shown on the plans, provide connection hardware for Department -furnished
barrier sections. Provide the type of connection hardware shown on the plans that meets the requirements of Item 442. Connection hardware is defined as being sufficient hardware for one complete connection between two traffic barrier sections, including the required bolts, nuts, washers, structural steel shapes, and dowels. Connection hardware will be retained by the Department unless otherwise shown on the plans.
2.1.5 Furnished by the Department . Department -furnished barrier sections will be at a stockpile location or an
existing traffic barrier installation shown on the plans. The Department will furnish connection hardware for Department -furnished barrier sections unless otherwise shown o n the plans. Connection hardware is defined as being sufficient hardware for one complete connection between two traffic barrier sections, including the required bolts, nuts, washers, structural steel shapes, and dowels.
Article 3 — Construction
Notify the Engineer of the location of the casting site and the date on which the work will begin. Multi -project fabrication plants as defined in Item 424 that produce concrete traffic barrier, except temporary barrier furnished and retained by the Contractor, must be qualified in accordance with DMS -7350 , “Qualification 796 Procedure for Multi -Project Fabrication Plants of Precast Concrete Traffic Barrier.” See the Department’s MPL for approved fabricators. Construct barrier in accordance with Item 420 to the dimensions and cross- sections shown on the plans. Provide forms and cure concrete in accordance with Item 424. Provide a rough texture to the bottom surface of single -slope or F -shape barriers and to the top of l ow-profile barriers similar to a wood float finish. Once concrete has attained sufficient strength to resist stresses due to handling, remove formwork and place barrier sections on blocking in a designated storage area. Produce precast barrier to the tolerances shown in Table 1 unless otherwise shown on the plans . Table 1 Precast Barrier Tolerances Dimension Tolerance Length ±1 in. Insert placement ±1/2 in. Horizontal alignment ±1/8 in. per 10 ft . of length Deviation of Ends Horizontal skew ±1/4 in. Vertical batter ±1/8 in. per foot of depth Install the barrier sections as shown on the plans or as directed. For concrete barrier, the areas that require pinning will be shown on the plans. For steel barrier, the acceptable deflection distance will be shown on the plans. After use, stockpile barri er sections and connection hardware that will be retained by the Department at the location shown on the plans or as otherwise directed. Obtain assembly and installation information for the portable steel traffic barrier from the manufacturer and provide the Engineer with an installation and repair manual specific to the portable steel traffic barrier. Repair or replace all traffic barrier or connecting hardware damaged by the Contractor’s operations at the Contractor’s expense. Repair or replace any pavement damaged in the process of installing, moving, or removing barrier sections at the Contractor’s expense.
Article 4 — Measurement
This Item will be measured by the foot based on the nominal lengths of the barrier sections . When shown on the plans, connection hardware will be measured by each complete connection between two traffic barrier sections for Department -furnished barrier. When pinning of concrete barrier is shown on the plans, pinning of the barrier will be measured by each pin.
Article 5 — Payment
The work performed and materials furnished in accordance with this Item and measured as provided under “Measurement” will be paid for at the unit price bid as follows. For concrete barrier only, bid for “Portable Traffic Barrier” of the work category (Furnish and Install, Desig nated Source, Move, Stockpile, Remove, or Connection Hardware), shape (e.g., Single Slope, F-Shape, or Low Profile) and Type ( e.g., 1, 2, or 3) of barrier sections specified. This price includes equipment, labor, tools, and incidentals . 797 For concrete and st eel barrier, bid for “Portable Traffic Barrier” of the work category (Furnish and Install, Designated Source, Move, Stockpile, or Remove), shape (e.g., Single Slope, F -Shape, or Low Profile) and Type (e.g., 1, 2, or 3) of barrier sections specified, or “St eel.” This price includes equipment, labor, tools, and incidentals .
5.1 Furnish and Install . This price is full compensation for furnishing and installing barrier sections and
connection hardware.
5.2 Designated Source. This price is full compensation for delivering and installing Department -furnished barrier
sections and connection hardware from a designated location.
5.3 Move. This price is full compensation for moving barrier section installations on the project from one location
to another (including disassembly and reassembly costs), moving barrier sections from an installation on the project to a temporary storage area (including disassembly costs), or moving barrier sections from a temporary storage area to an install ation site on the project (including assembly costs) .
5.4 Stockpile . This price is full compensation for removing barrier sections and connection hardware from the
project and delivering to the Department stockpile area shown on the plans or as directed.
5.5 Remove. This price is full compensation for removing barrier and connection hardware from the project that
are retained by the Contractor .
5.6 Connection Hardware . This price is full compensation for furnishing and installing connection hardware on
Department -furnished barrier sections.
5.7 Pinning. This price is full compensation for furnishing, installing, and removal of pins for pinned placement of
concrete barrier. Pinning of steel barrier will not be paid for directly, but will be subsidiary to pertinent Items .